<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        
        body {
            background-color: aquamarine;
        }
        
        .leftBox {
            width: 220px;
            height: 600px;
            background-color: #fff;
        }
        
        .leftBox div:hover {
            background-color: gray;
        }
        
        .leftBox div a:hover {
            color: red;
        }
        
        .leftBox div {
            height: 25px;
        }
        
        .item {
            padding-left: 18px;
            line-height: 25px;
        }
        
        a {
            text-decoration: none;
            color: #333;
            font-size: 14px;
        }
        
        .leftBox .item span {
            padding-left: 5px;
            font-size: 12px;
        }
    </style>
</head>

<body>
    <div class="leftBox">
        <div class="item">
            <a href="">手机</a><span>/</span>
            <a href="">运营商</a><span>/</span>
            <a href="">数码</a>
        </div>
        <div class="item">
            <a href="">手机</a><span>/</span>
            <a href="">运营商</a><span>/</span>
            <a href="">数码</a>
        </div>
        <div class="item">
            <a href="">手机</a><span>/</span>
            <a href="">运营商</a><span>/</span>
            <a href="">数码</a>
        </div>
        <div class="item">
            <a href="">手机</a><span>/</span>
            <a href="">运营商</a><span>/</span>
            <a href="">数码</a>
        </div>
        <div class="item">
            <a href="">手机</a><span>/</span>
            <a href="">运营商</a><span>/</span>
            <a href="">数码</a>
        </div>
        <div class="item">
            <a href="">手机</a><span>/</span>
            <a href="">运营商</a><span>/</span>
            <a href="">数码</a>
        </div>
    </div>
</body>

</html>